# Database
DATABASE_URL=postgres://localhost:5432/mydb
REDIS_URL=redis://localhost:6379

# API Keys
STRIPE_SECRET_KEY=sk_test_xxx
JWT_SECRET=my-secret-key

# App config
PORT=3000
NODE_ENV=production
DEBUG=false

# Empty value (still counts)
EMPTY_VAR=

# Quoted values
QUOTED_DOUBLE="hello world"
QUOTED_SINGLE='hello world'

# With export prefix
export EXPORTED_VAR=value
